Two-Point Angular Correlation Function for the Green Bank 4.85 GHz Sky Survey

Abstract

This paper presents an angular correlation analysis of the Green Bank 4.85 GHz radio catalog of 54,579 sources (S ≳ 25 mJy). The Green Bank catalog is found to be complete to S ≥ 35 mJy over 20° ≤ δ < 74°, 0h≤ α < 24h, and Galactic latitude |b\ ≥ 10°. The two-point angular correlation function shows evidence for the clustering of radio sources, with a power-law distribution consistent with a slope γ = -0.8. This may well provide the first detection of an angular correlation in a large area, complete deep radio survey.